A seven digit number has to be formed using 1,2,3 (and not necessarily all of them) with 1 never immediately followed by 2, 2 never immediately followed by 3 and 3 never immediately followed by 1. The number of such numbers equals

Define a 'good word' as a sequence of letters that consists only of the letters A, B and C and in which A never immidiately followed by B, B is never immediately followed by C, and C is never immediately followed by A. If the number of n-letter good words are 384, find the value of n

The number of 3 digited numbers that can be formed using {1,2,3,4,5} any number of xx is

If two digit number are formed using the digits 0, 1, 2, 3, 4, 5 with repeating them, then n(S) =

If two digit number are formed using the digits 0, 1, 2, 3, 4, 5 with repeating them, then n(S) =

Numbers formed with the digits, 1,2,3 are:

The number of 5 digit numbers formed using the digits 1,1,2,2,3 is

Y W @ 1 & C N 3 P L B 9 uarr = D * E 2 ₤ M V $ 7 # 4 F G 5 If (A) denotes the number of symbols immediately preceded by a number, (B) denotes the number of letters immediately followed by a symbol, and (C ) denotes the number of letters either not immediately followed by a number or not immediately preceded by a letter, then which of the following is the ascending order of the numbers denoted by (A), (B), & (C)?

The number of 3 digit numbers can be formed by using the digits 1,2,3,4

A seven digit number is formed using digits 3,3,4,4,4,5,5. The probability, that number so formed is divisble by 2, is: